Q re RenTech and a 63S
If you RT a 63 or a 63S is the end result the exact same performance wise? The dealer made it sound like the RT chip merely replaced the Mercedes “S” chip and this whether you started with a standard 63 or 63S the end performance wise as the same.
Thank you.
To add I spoke with RennTech and they confirmed this. Net result is the same performance whether you start with a 63 or a 63S for the AMG GT 4 door coupe. They said this is. It the case for all models though.


